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Knothe G, Steidley KR. Composition of Some Apiaceae Seed Oils Includes Phytochemicals, and Mass Spectrometry of Fatty Acid 2‐Methoxyethyl Esters. EUR J LIPID SCI TECH 2019. [DOI: 10.1002/ejlt.201800386] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Gerhard Knothe
- National Center for Agricultural Utilization ResearchAgricultural Research ServiceU.S. Department of AgriculturePeoriaIL61604USA
| | - Kevin R. Steidley
- National Center for Agricultural Utilization ResearchAgricultural Research ServiceU.S. Department of AgriculturePeoriaIL61604USA
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Characterization of triacylglycerols in the seeds ofAquilegia vulgaris by chromatographic and mass spectrometric methods. Lipids 2016; 27:436-41. [PMID: 27519669 DOI: 10.1007/bf02536385] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/1991] [Revised: 04/09/1992] [Accepted: 04/25/1992] [Indexed: 10/23/2022]
Abstract
A combination of analytical techniques is generally necessary to properly characterize complex lipid materials. Chromatographic separation in conjunction with spectroscopic characterization was utilized for the analysis of the triacylglycerols in the seeds ofAquilegia vulgaris. Reversed-phase high-performance liquid chromatography (HPLC), micropacked argentation supercritical fluid chromatography (SFC), and combinations of the two techniques were used. The fatty acid profile was determined by gas chromatography/mass spectrometry of the picolinyl esters and by gas chromatography/flame-ionization detection of the methyl esters. The major components were also identified by direct inlet mass spectrometry. The excellent selectivity of packed fused silica argentation SFC for the separation of triacylglycerols was demonstrated.
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Moorhoff C, Li Y, Cook WD, Braybrook C, Chen QZ. Characterization of the prepolymer and gel of biocompatible poly(xylitol sebacate) in comparison with poly(glycerol sebacate) using a combination of mass spectrometry and nuclear magnetic resonance. POLYM INT 2014. [DOI: 10.1002/pi.4831] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Cornelis Moorhoff
- Department of Materials Engineering; Monash University; Clayton 3800 Australia
| | - Yuan Li
- Department of Materials Engineering; Monash University; Clayton 3800 Australia
| | - Wayne D Cook
- Department of Materials Engineering; Monash University; Clayton 3800 Australia
| | - Carl Braybrook
- Materials Science and Engineering; Manufacturing Flagship, CSIRO; Clayton 3169 Australia
| | - Qi-Zhi Chen
- Department of Materials Engineering; Monash University; Clayton 3800 Australia
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Fernandes JLN, de Souza ROMA, de Vasconcellos Azeredo RB. 13C NMR quantification of mono and diacylglycerols obtained through the solvent-free lipase-catalyzed esterification of saturated fatty acids. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2012; 50:424-428. [PMID: 22539418 DOI: 10.1002/mrc.3814] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Revised: 02/16/2012] [Accepted: 02/25/2012] [Indexed: 05/31/2023]
Abstract
In the present investigation, we studied the enzymatic synthesis of monoacylglycerols (MAG) and diacylglycerols (DAG) via the esterification of saturated fatty acids (stearic, palmitic and an industrial residue containing 87% palmitic acid) and glycerol in a solvent-free system. Three immobilized lipases (Lipozyme RM IM, Lipozyme TL IM and Novozym 435) and different reaction conditions were evaluated. Under the optimal reaction conditions, esterifications catalyzed by Lipozyme RM IM resulted in a mixture of MAG and DAG at high conversion rates for all of the substrates. In addition, except for the reaction of industrial residue at atmospheric pressure, all of these products met the World Health Organization and European Union directives for acylglycerol mixtures for use in food applications. The products were quantified by (13)C NMR, with the aid of an external reference signal which was generated from a sealed coaxial tube filled with acetonitrile-d3. After calibrating the area of this signal using the classical external reference method, the same coaxial tube was used repeatedly to quantify the reaction products.
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Affiliation(s)
- Jane Luiza Nogueira Fernandes
- Laboratório de Aplicações da RMN, Departamento de Química Orgânica, Instituto de Química, Universidade Federal Fluminense, Rua Outeiro de São João Batista s/n°, CEP: 24020-150, Niterói, Rio de Janeiro, Brazil
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Bettaieb I, Bourgou S, Sriti J, Msaada K, Limam F, Marzouk B. Essential oils and fatty acids composition of Tunisian and Indian cumin (Cuminum cyminum L.) seeds: a comparative study. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2011; 91:2100-2107. [PMID: 21681765 DOI: 10.1002/jsfa.4513] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2010] [Accepted: 10/26/2010] [Indexed: 05/30/2023]
Abstract
BACKGROUND Cumin (Cuminum cyminum L.) seeds of two geographic origins, Tunisia (TCS) and India (ICS), were studied regarding their fatty acid and essential oil composition. RESULTS Oil yields were 17.77 and 15.40% for TCS and ICS respectively. Petroselinic acid (C18:1n-12) was the major fatty acid in both varieties, with a higher proportion being found in TCS (55.90% of total fatty acids (TFA)) than in ICS (41.42% TFA). Moreover, the most predominant fatty acids were palmitic, petroselenic and linoleic acids, accounting for more than 91% TFA in both varieties. The unsaturated fatty acid content was high: 70.95% TFA in TCS and 62.17% TFA in ICS. Essential oil yields differed significantly (P < 0.05) between the two varieties: 1.21 and 1.62% for ICS and TCS respectively. A total of 40 compounds were identified, 34 of which were present in both essential oils. The two varieties displayed different chemotypes: γ-terpinene/1-phenyl-1,2-ethanediol for TCS and cuminaldheyde/γ-terpinene for ICS. CONCLUSION The study revealed that the biochemical composition of cumin seeds is origin-dependent and that cumin seeds are rich in an unusual fatty acid, petroselinic acid. Besides, cumin essential oil is a rich source of many compounds, including cuminaldehyde and γ-terpinene. The overall results suggest the exploitation of cumin seeds as a low-cost renewable source for industrial processing in the fields of cosmetics, perfumes and pharmaceuticals.
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Affiliation(s)
- Iness Bettaieb
- Laboratoire des Substances Bioactives, Centre de Biotechnologie à la Technopole de Borj-Cédria (CBBC), Hammam-Lif, Tunisia.
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Beal C, Webber M, Ruoff R, Hebner R. Lipid analysis of Neochloris oleoabundans by liquid state NMR. Biotechnol Bioeng 2010; 106:573-83. [DOI: 10.1002/bit.22701] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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7
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Laribi B, Kouki K, Mougou A, Marzouk B. Fatty acid and essential oil composition of three Tunisian caraway (Carum carvi L.) seed ecotypes. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2010; 90:391-396. [PMID: 20355058 DOI: 10.1002/jsfa.3827] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
BACKGROUND The essential oil and fatty acid composition of Tunisian annual caraway (Carum carvi L.) seeds from three ecotypes was investigated by gas chromatography and gas chromatography-mass spectrometry analyses. RESULTS Total fatty acid (TFA) proportion of caraway seeds varied from 2.95% to 5.68% (w/w). The fatty acid composition revealed that Tunisian caraway seed oil is rich in an unusual fatty acid-petroselinic acid-the proportion of which varied from 31.53% and 38.36% of TFA. Essential oil yields were relatively low and ranged from 0.86% to 1.20% (w/w). Forty-one volatile compounds were identified, the main ones being carvone (76.78-80.53%) and limonene (13.05-20.29%). CONCLUSION Tunisian caraway seed oil is rich in an unusual fatty acid-petroselinic acid-which is of potential industrial significance. In addition, Tunisian caraway essential oil is carvone chemotype. This fact is of great economic interest due to the several applications of carvone in the alimentary and medicinal industries.
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Affiliation(s)
- Bochra Laribi
- National Agronomic Institute of Tunisia, 43 Av. Charles Nicolle-1082, Tunis, Tunisia. bochra
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8
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Structure of the O-polysaccharide of Providencia alcalifaciens O8 containing (2S,4R)-2,4-dihydroxypentanoic acid, a new non-sugar component of bacterial glycans. Carbohydr Res 2008; 343:2706-11. [DOI: 10.1016/j.carres.2008.08.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2008] [Revised: 08/06/2008] [Accepted: 08/07/2008] [Indexed: 11/23/2022]
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9
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Standal IB, Praël A, McEvoy L, Axelson DE, Aursand M. Discrimination of Cod Liver Oil According to Wild/Farmed and Geographical Origins by GC and 13C NMR. J AM OIL CHEM SOC 2007. [DOI: 10.1007/s11746-007-1174-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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10
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Rezzi S, Giani I, Héberger K, Axelson DE, Moretti VM, Reniero F, Guillou C. Classification of gilthead sea bream (Sparus aurata) from 1H NMR lipid profiling combined with principal component and linear discriminant analysis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:9963-9968. [PMID: 17970589 DOI: 10.1021/jf070736g] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The combination of (1)H NMR fingerprinting of lipids from gilthead sea bream (Sparus aurata) with nonsupervised and supervised multivariate analysis was applied to differentiate wild and farmed fish and to classify farmed specimen according to their areas of production belonging to the Mediterranean basin. Principal component analysis (PCA) applied on processed (1)H NMR profiles made a clear distinction between wild and farmed samples. Linear discriminant analysis (LDA) allowed classification of samples according to the geographic origin, as well as for the wild and farmed status using both PCA scores and NMR data as variables. Variable selection for LDA was achieved with forward selection (stepwise) with a predefined 5% error level. The methods allowed the classification of 100% of the samples according to their wild and farmed status and 85-97% to geographic origin. Probabilistic neural network (PNN) analyses provided complementary means for the successful discrimination among classes investigated.
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Affiliation(s)
- Serge Rezzi
- Physical and Chemical Exposure Unit, Institute for Health and Consumer Protection, Joint Research Centre, European Commission, BEVABS T.P. 281, I-21020 Ispra (VA), Italy
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Duquesnoy E, Castola V, Casanova J. Triterpenes in the hexane extract of leaves of Olea europaea L.: analysis using 13C-NMR spectroscopy. PHYTOCHEMICAL ANALYSIS : PCA 2007; 18:347-53. [PMID: 17623370 DOI: 10.1002/pca.989] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Two neutral triterpenes and a triterpene acid were identified and quantified directly, in the absence of any purification steps, in a precipitate obtained during the industrial extraction of the leaves of Olea europaea L. using 13C-NMR spectroscopy (spectrometer operating at 4.7 T equipped with a 10 mm probe). The method was optimised in order to reduce the duration of analysis with a routine NMR spectrometer. Together with long-chain linear compounds, erythrodiol, uvaol and oleanolic acid accounted for 27.3, 18.3 and 12.5% of the precipitate, respectively.
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Affiliation(s)
- Emilie Duquesnoy
- Université de Corse, Equipe Chimie et Biomasse, UMR CNRS 6134, Route des Iles Sanguinaire, 20000 Ajaccio, France
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12
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Characterization of Cold-Pressed Onion, Parsley, Cardamom, Mullein, Roasted Pumpkin, and Milk Thistle Seed Oils. J AM OIL CHEM SOC 2007. [DOI: 10.1007/s11746-007-1076-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Compton DL, Vermillion KE, Laszlo JA. Acyl Migration Kinetics of 2-Monoacylglycerols from Soybean Oil via 1H NMR. J AM OIL CHEM SOC 2007. [DOI: 10.1007/s11746-007-1049-1] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Aursand M, Standal IB, Axelson DE. High-resolution (13)C nuclear magnetic resonance spectroscopy pattern recognition of fish oil capsules. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:38-47. [PMID: 17199311 DOI: 10.1021/jf061754l] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
13C NMR (nuclear magnetic resonance) spectroscopy, in conjunction with multivariate analysis of commercial fish oil-related health food products, have been used to provide discrimination concerning the nature, composition, refinement, and/or adulteration or authentication of the products. Supervised (probabilistic neural networks, PNN) and unsupervised (principal component analysis, PCA; Kohonen neural networks; generative topographic mapping, GTM) pattern recognition techniques were used to visualize and classify samples. Simple PCA score plots demonstrated excellent, but not totally unambiguous, class distinctions, whereas Kohonen and GTM visualization provided better results. Quantitative class predictions with accuracies >95% were achieved with PNN analysis. Trout, salmon, and cod oils were completely and correctly classified. Samples reported to be salmon oils and cod liver oils did not cluster with true salmon and cod liver oil samples, indicating mislabeling or adulteration.
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Affiliation(s)
- Marit Aursand
- SINTEF Fisheries and Aquaculture, N-7465 Trondheim, Norway.
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Parry J, Hao Z, Luther M, Su L, Zhou K, Yu LL. Characterization of cold-pressed onion, parsley, cardamom, mullein, roasted pumpkin, and milk thistle seed oils. J AM OIL CHEM SOC 2006. [DOI: 10.1007/s11746-006-5036-8] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- John Parry
- ; Department of Nutrition and Food Sciences; University of Maryland; 0112 Skinner Bdg. College Park 20742 MD
| | - Zhigang Hao
- ; Analytical Sciences Department; Colgate-Palmolive Company; Piscataway 08855 New Jersey
| | - Marla Luther
- ; Department of Nutrition and Food Sciences; University of Maryland; 0112 Skinner Bdg. College Park 20742 MD
| | - Lan Su
- ; Department of Nutrition and Food Sciences; University of Maryland; 0112 Skinner Bdg. College Park 20742 MD
| | - Kequan Zhou
- ; Department of Nutrition and Food Sciences; University of Maryland; 0112 Skinner Bdg. College Park 20742 MD
| | - Liangli Lucy Yu
- ; Department of Nutrition and Food Sciences; University of Maryland; 0112 Skinner Bdg. College Park 20742 MD
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Avato P, Rosito I, Papadia P, Fanizzi FP. Cyanolipid-rich seed oils from Allophylus natalensis and A. dregeanus. Lipids 2005; 40:1051-6. [PMID: 16382577 DOI: 10.1007/s11745-005-1468-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
As a continuation of our study on plants of the Sapindaceae, the chemical composition of the oil extracted from seeds of Allophylus natalensis (Sonder) De Winter and of A. dregeanus (Sonder) De Winter has been investigated. The oil from both species contained approximately equal amounts of TAG and type I cyanolipids (CL), 1-cyano-2-hydroxymethylprop-2-en-1-ol-diesters, with minor amounts of type III CL, 1-cyano-2-hydroxymethylprop-1-en-3-ol-diesters. Structural investigation of the oil components was accomplished by chemical, chromatographic (TLC, CC, GC, and GC-MS), and spectroscopic (IR, NMR) means. GC and GC-MS analysis showed that C20 FA were dominant in the CL components of the oil from the two species (44-80% vs. 21-26% in TAG), with cis-11-eicosenoic acid (36-46%) and cis 13-eicosenoic acid (paullinic acid, 23-37%) as the major esterified fatty acyl chains in A. natalensis and A. dregeanus, respectively. cis-Vaccenic acid was particularly abundant (11-31%) in the CL from A. dregeanus, whereas eicosanoic acid (10-22%) was also a major component of CL in both species.
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Affiliation(s)
- P Avato
- Dipartimento Farmaco-Chimico, Università, Bari, Italy.
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Avato P, Pesante MA, Fanizzi FP, Santos CADM. Seed oil composition of Paullinia cupana var. sorbilis (Mart.) Ducke. Lipids 2003; 38:773-80. [PMID: 14506841 DOI: 10.1007/s11745-003-1126-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The chemical composition of the oil extracted from the seeds of Paullinia cupana var. sorbilis (Mart.) Ducke (syn. P. sorbilis) was investigated. Cyanolipids constituted 3% of the total oil from guaraná seeds, whereas acylglycerols accounted for 28%. 1H and 13C NMR analyses indicated that type I cyanolipids (1-cyano-2-hydroxymethylprop-2-ene-1-ol diesters) are present in the oil from P. cupana. GC and GC-MS analysis showed that cis-11-octadecenoic (cis-vaccenic acid) and cis-11-eicosenoic acids were the main FA (30.4 and 38.7%) esterified to the nitrile group. Paullinic acid (7.0%) was also an abundant component. Oleic acid (37.4%) was the dominant fatty acyl chain in the acylglycerols.
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Affiliation(s)
- P Avato
- Dipartimento Farmaco-Chimico, Università, 1-70125 Bari, Italy.
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Abstract
We describe the results from the isolation and structural identification of the acylglycerol constituents of fruits from wild plants belonging to different species of Thapsia (Apiaceae). The isolated lipid fractions were analyzed and characterized by chemical, chromatographic, and spectroscopic means. In particular, 13C nuclear magnetic resonance data allowed the identification of petroselinic acid as the major fatty acid esterified to glycerol in the fruit oils from all the plant samples. This was also confirmed by gas chromatography (GC) and GC-mass spectrometry analyses of fatty acid methyl and butyl esters derivatives from Thapsia oil. The genus Thapsia should be regarded as a useful source for the extraction of petroselinic acid, which represents an important oleochemical raw material.
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Affiliation(s)
- P Avato
- Department of Pharmaceutical Chemistry, Università degli Studi di Bari, Italy.
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Wolff RL. Comments on the methodology for the separation and quantitation of cis
-6 (petroselinic) and cis
-9 (oleic) 18:1 acids. J AM OIL CHEM SOC 1998. [DOI: 10.1007/s11746-998-0243-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Robert L. Wolff
- ; ISTAB Laboratoire de Lipochimie Alimentaire; Université Bordeaux 1; Avenue des Facultés Talence cedex 33405 France
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20
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Jie MS, Mustafa J. High-resolution nuclear magnetic resonance spectroscopy--applications to fatty acids and triacylglycerols. Lipids 1997; 32:1019-34. [PMID: 9358427 DOI: 10.1007/s11745-997-0132-y] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
During the past two decades, nuclear magnetic resonance spectroscopy (NMR) has played an ever-increasing role in the structural determination of fatty acids, fatty acid derivatives and analogues, and in the analysis of the structures of triacylglycerols including the quantitative analysis of lipid mixtures. This article discusses some of the results obtained through the application of the NMR technique to lipid molecules and reviews the literature. To maintain brevity, this article does not cover the underlying theory of NMR spectroscopy as numerous books devoted to modern NMR spectroscopy have been published.
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Affiliation(s)
- M S Jie
- Department of Chemistry, University of Hong Kong.
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21
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O'Connor CJ, Barton RH. Modifications of emulsions for determination of the rates of lipase-catalysed hydrolysis and intramolecular acyl transfer reactions of lipids. J Mol Liq 1997. [DOI: 10.1016/s0167-7322(97)00045-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Jie MSFLK, Pasha MK, Syed-Rahmatullah MSK. Fatty acids, fatty acid analogues and their derivatives. Nat Prod Rep 1997. [DOI: 10.1039/np9971400163] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Lie Ken Jie MS, Lam C. 13C-Nuclear magnetic resonance spectroscopic studies of triacylglycerols of type AAA containing (Z)- and (E)-monoethylenic acyl groups. Chem Phys Lipids 1995. [DOI: 10.1016/0009-3084(95)02479-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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24
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Gunstone FD, Seth S, Wolff RL. The distribution of Δ5 polyene acids in some pine seed oils between the α- and β-chains by 13C-NMR spectroscopy. Chem Phys Lipids 1995. [DOI: 10.1016/0009-3084(95)02488-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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25
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Chung W, Goo YM, Na DS, Kim KJ. A phospholipase A2 inhibitor fromArisaema amurense Max. var.serratum Nakai. Arch Pharm Res 1995. [DOI: 10.1007/bf02976416] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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26
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Gunstone F, Seth S. A study of the distribution of eicosapentaenoic acid and docosahexaenoic acid between the α and β glycerol chains in fish oils by 13C-NMR spectroscopy. Chem Phys Lipids 1994. [DOI: 10.1016/0009-3084(94)90095-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Medina I, Sacchi R. Acyl stereospecific analysis of tuna phospholipids via high resolution 13C-NMR spectroscopy. Chem Phys Lipids 1994. [DOI: 10.1016/0009-3084(94)90047-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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28
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Gunstone FD. High resolution 13C NMR. A technique for the study of lipid structure and composition. Prog Lipid Res 1994; 33:19-28. [PMID: 8190739 DOI: 10.1016/0163-7827(94)90005-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- F D Gunstone
- Chemistry Department, The University, St Andrews, Fife, U.K
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30
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13C-NMR studies of mono-, di-and tri-acylglycerols leading to qualitative and semiquantitative information about mixtures of these glycerol esters. Chem Phys Lipids 1991. [DOI: 10.1016/0009-3084(91)90095-s] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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